Capnia Pictet, 1841

Murányi, Dávid, Gamboa, Maribet & Orci, Kirill Márk, 2014, Zwicknia gen. n., a new genus for the Capnia bifrons species group, with descriptions of three new species based on morphology, drumming signals and molecular genetics, and a synopsis of the West Palaearctic and Nearctic genera of Capniidae (Plecoptera), Zootaxa 3812 (1), pp. 1-82 : 15

Capnia Pictet, 1841 sensu stricto

( Figs. 3–4 , 24 , 39 )

Capnia (Capnia) Pictet, 1841 — Pictet 1841: 116. (original description, type species not designated).

Capnia Pictet, 1841 — Enderlein 1909: 391. (transfer of Capnia (Gripopteryx) into Gripopterygidae Enderlein, 1909 , designation of Capnia nigra Pictet, 1840 (sic!; = Perla nigra Pictet, 1833 ) as the type species of Capnia ); Kimmins 1947: 261. (define the identity of C. nigra ( Pictet, 1833)) .

Capnia atra species group sensu Zhiltzova 2001 — Zhiltzova 2001: 424. (definition); Zhiltzova 2003: 324. (revision, partly refers to Capnia Pictet, 1841 sensu lato).

Capnia nearctica species group sensu Nelson & Baumann, 1989 — Nelson & Baumann 1989: 336. (definition and revision, partly refers to Capnia Pictet, 1841 sensu lato).

Diagnosis. Male epiproct: B-scl vestigial, fused with Ep-scl and turned into a vestigial Ll; Lb-scl large, divided from Ep-scl; Ep-scl laterally divided along entire length with connecting membrane, ventrally entire, caudal setae present; I-scl small, curved hook, Ec present. Male Pp: apical part long and wide; Fp long and medium wide, fused with Rp. Male Sg: fused with St 9 and Tg 9, vesicle lacking. Female Sg: rounded, entire or narrower than St 8; inner sclerites present. Male tergites: Tg 7 with process. Ventral thoracic sclerites: MPrs and MeFs triangular, MeFsp separated from MePfs. Macropterous wings: forewing A1 beyond a and R1 before r curved.

Species included. Type species: Perla nigra Pictet, 1833 ; Further species: Capnia ahngeri Koponen, 1949 (in Koponen & Brinck 1949), C. aligera Zapekina-Dulkeit, 1975a , C. atra Morton, 1896 , C. khubsugulica Zhiltzova & Varykhanova, 1987 , C. nearctica Banks, 1918 , C. pygmaea ( Zetterstedt, 1840) , C. zaicevi Klapálek, 1914 . 4 are Transpalaearctic, 3 from the East Palaearctic (including 1 endemic to Mongolia) and 1 is Holarctic with Transberingian connection; 5 of these examined (see Appendix 1).

Remarks. This sensu stricto diagnosis of the genus is based on the type species, C. nigra ( Pictet, 1833) . As it differs markedly from the most of the species previously placed in Capnia , the sensu stricto diagnosis confirms only eight species in this genus. Capnia kurnakovi Zhiltzova, 1978 (in Zhiltzova & Levanidova 1978) and C. alternata Zapekina-Dulkeit, 1975b may belong here, but no material was available for examination and illustrations and descriptions available lack exact details of the epiproct.

Figures

FIGURES 1–6. Male terminalia of West Palaearctic Capniidae—1–2: Zwicknia bifrons (Newman); 3–4: Capnia s.s. nigra (Pictet); 5–6: Capnia s.l. vidua Klapálek; 1, 3, 5: dorso-caudal view; 2, 4, 6: ventro-caudal view (B-scl: basal sclerite; Cs: caudal setae; Ec: eversible crest; Ep-scl: main epiproct sclerite (shaded in grey); I-scl: inner sclerite; Lb-scl: laterobasal sclerite; Ll: lower limb; Tg 10: tergite 10)—not to scale.

FIGURES 23–31. Male paraprocts and fusion plate of Capniidae, dorso-lateral view—23: Zwicknia bifrons (Newman); 24: Capnia s.s. nigra (Pictet); 25: Capnia s.l. vidua Klapálek; 26: Capnia s.l. prolongata Zhiltzova; 27: Capnia s.l. pedestris Kimmins; 28: Capnia s.l. arensi Zhiltzova; 29: Bolshecapnia gregsoni (Ricker); 30: Isocapnia grandis (Banks); 31: Eucapnopsis brevicauda (Claassen) (Fp: fusion plate; Pp: paraproct; Rp: retractoral plate)—not to scale.

FIGURES 32–48. Male terminalia of Capniidae, ventral view—32: Zwicknia bifrons (Newman); 33: Bolshecapnia gregsoni (Ricker); 34: Eucapnopsis stigmatica transversa Aubert; 35: Isocapnia grandis (Banks); 36: Capnia s.l. arensi Zhiltzova; 37: C. s.l. prolongata; 38: C. s.l. pedestris Kimmins; 39: C. s.s. nigra (Pictet); 40: Arsapnia decepta Banks; 41: Allocapnia granulata (Claassen); 42: Mesocapnia silvatica Raušer; 43: Capnura venosa Banks; 44: Utacapnia lemoniana (Nebeker & Gaufin); 45: Paracapnia opis (Newman); 46: Nemocapnia carolina Banks; 47: Capnopsis schilleri schilleri (Rostock); 48: Capnioneura nemuroides Ris (C: cercus; Ep-scl: main epiproct sclerite; Fp: fusion plate; Pp: paraproct; Sg: subgenital plate; St 9: sternite 9; Tg 9: tergite 9; Tg 10: tergite 10; Vv: ventral vesicle)—scale 1 mm.